How To Make Marquee On Tkinter In Label?

I have this source code: from Tkinter import * import tkMessageBox import time class Window(Tk): def __init__(self,parent): Tk.__init__(self,parent) self.parent

Solution 1:

The pattern for doing animation in tkinter is to use after to schedule one frame of the animation at a time. It looks something like this, where fps is defined as the number of frames you want per second, and widget is a tkinter widget:

def animate():
    <draw one frame of animation>
    widget.after(int(1000/fps), animate)

As for a marquee, one of the easiest solutions is to use a canvas, since it has a convenient move method that can be used to move text from right to left.

Here's an example:

import tkinter as tk

classMarquee(tk.Canvas):
    def__init__(self, parent, text, margin=2, borderwidth=1, relief='flat', fps=30):
        tk.Canvas.__init__(self, parent, borderwidth=borderwidth, relief=relief)
        self.fps = fps

        # start by drawing the text off screen, then asking the canvas# how much space we need. Use that to compute the initial size# of the canvas. 
        text = self.create_text(0, -1000, text=text, anchor="w", tags=("text",))
        (x0, y0, x1, y1) = self.bbox("text")
        width = (x1 - x0) + (2*margin) + (2*borderwidth)
        height = (y1 - y0) + (2*margin) + (2*borderwidth)
        self.configure(width=width, height=height)

        # start the animation
        self.animate()

    defanimate(self):
        (x0, y0, x1, y1) = self.bbox("text")
        if x1 < 0or y0 < 0:
            # everything is off the screen; reset the X# to be just past the right margin
            x0 = self.winfo_width()
            y0 = int(self.winfo_height()/2)
            self.coords("text", x0, y0)
        else:
            self.move("text", -1, 0)

        # do again in a few milliseconds
        self.after_id = self.after(int(1000/self.fps), self.animate)

root = tk.Tk()
marquee = Marquee(root, text="Hello, world", borderwidth=1, relief="sunken")
marquee.pack(side="top", fill="x", pady=20)

root.mainloop()

Solution 2:

This is going to be hard to integrate because tkinter doesn't "play nice" with infinite loops.

The below program written with assistance from here creates a marquee, this is simply an example to prove this can be done and is a poor way of doing this.

from tkinter import *

root = Tk()

text="Lorem Ipsum"

text = (' '*20) + text + (' '*20)

marquee = Text(root, height=1, width=20)
marquee.pack()

i = 0defcommand(x, i):
    marquee.insert("1.1", x)
    if i == len(text):
        i = 0else:
        i = i+1
    root.after(100, lambda:command(text[i:i+20], i))

button = Button(root, text="Start", command=lambda: command(text[i:i+20], i))
button.pack()

root.mainloop()

This also uses the Text widget instead of the Label widget, mostly because it's simpler to do this way.

---

To start it on program launch, simply adjust it to the below:

from tkinter import *

root = Tk()

text="Lorem Ipsum"

text = (' '*20) + text + (' '*20)

marquee = Text(root, height=1, width=20)
marquee.pack()

i = 0defcommand(x, i):
    marquee.insert("1.1", x)
    if i == len(text):
        i = 0else:
        i = i+1
    root.after(100, lambda:command(text[i:i+20], i))

command(text[i:i+20], i)

root.mainloop()

Solution 3:

I have no experience in Tkinter but I hope this will help you to understand to implement this in your code. Thanks!

import sys
import time


defmain():
    program = animate()
    program.data = input("Enter string : ") + " "
    program.width = int(input("Enter width : "))
    program.animate()


classanimate:
    def__init__(self):
        self.data = ""
        self.width = 0defanimate(self):
        try:
            whileTrue:
                for x inrange(0, self.width):
                    time.sleep(0.1)
                    msg = "\r{}{}".format(" " * x, self.data)
                    sys.stdout.write(msg)
                    sys.stdout.flush()

                for x inrange(self.width, 0, -1):
                    time.sleep(0.1)
                    msg = "\r{}{}".format(" " * x, self.data)
                    sys.stdout.write(msg)
                    sys.stdout.flush()
        except KeyboardInterrupt:
            print("Exiting")


if __name__ == "__main__":
    main()

Solution 4:

Hello I do not know if you can use this code to make an imitation of the marquee, it should be noted that it is for a window of 800 x 600 if they are other measures just have to change the 805 by the measure of the width of your window.

classMarqueeAnimation:

  def__init__(self,master=None,text="",eje_x = 0,velocity = 0):
      self.root = master
      self.marqueetext = text
      self.posx = eje_x
      self.velocity = velocity
      #Marquee Label
      self.lbl = Label(self.root,text=self.marqueetext,font=(12))
      self.reqposx = self.lbl.winfo_reqwidth() * -1
      self.lbl.place(x=0,y=250)

  defStarAnimation(self):
      try:
         self.posx += 1
         self.lbl.update()
         self.lbl.place(x=self.posx,y=265)
         if self.posx == 805:
            self.posx = self.reqposx
         self.animation = self.root.after(10,self.StarAnimation)
      except:
         passdefChangeAnimation(self,newtext=""):
      self.lbl.configure(text=newtext)
      self.lbl.update_idletasks()
      self.reqposx = self.lbl.winfo_reqwidth() * -1defStopAnimation(self):
      self.root.after_cancel(self.animation)